Printing press



Dec. 6, 1927".

w. M. KELLY PRINTING PRESS '7 Sheets-Sheet 1 Filed Aug. 6 1921 ill/MK oEmu 0 0 o I e 0 m 0 0 ,0 O o O o a o o 0 o a a Q o o Dec. 6, 1927,.1,651,774

. a f w. M. KELLY PRINTING PRESS Filed Au. 6. 1921 7 Sheets-Shet 2 \Deco6, I W. M. KELLY PRINTING PRESS Filed Ana. 6. 1921 '7 Sheets-Sheet 3 MrI W. M. KELLY PRINTING Pngss Dec. 6, 1927.

Fi1ed- Auz. 6, 1921 '7 Sheets-Sheet 4 Dec. 6, 1927.

W. M. KELLY PRINTING PRESS Filed Aug. 6, 1921 '7 Sheets-Sheet- 5 W. M.KELLY PRINTING PRES$ Filed Aug. 6 1921 "7 Sheets-Sheet 6 Dec. 6, 1927.

W; M. KELLY PRINTING PRESS Filed Auz. 6, 1921 7 Sheets-Sheet 7 PatentedDec. 6, 1927.

. presses and more resign Y race.

WILLIAM M. KELLY, or JERSEY CITY; NEW JERsEY.

remai s risnss.

"Application filed August 6, 1921] Serial No. 490,290

rocating the antifriction rollsor sliders sup- 'portingthi'e bed or thepress; in accordance with the ic iprO CatiOn Of the bed. t

Other objects and features of novelty will 7 be apparent fronithedescription taken in connection with the drawings, in Which Figure 1 isa side elevation of a press constructed in'accordan ce with thefpresentinvention; I

Figure 2 is a side elevation of the opposite side of the press; I

Figure 3 is a top plan View of the base or'frame', the bed and partsabove the same being removed;

Figure 4 is a sectional elevation-cf the base and bed takensubstantially on the line 5-5 of Fig. 3;

Figure 5 is a sectional elevation (if-th base and bed takensubstantially on the.

line 66 of Fig. 3'; a

Figure 6 is a sectional elevation of the base, bed, cylinder and inkingmechanism taken substantially on the line 77 of Fig.3;

Figure 7 is a diagrammatic view illustrating the piping connecting theair cylinders; Figure 8 is a diagrammatic'view of the mechanism forreciprocating the bed and showing the gears for driving the ink rollsand also the means for rotating the cylinder.

Referring to the drawings, in Which-the same reference character refersto like parts, it will be seenthat the entire press is driven from amotor 30 disposed at' the feeder end thereof. -This motor isrotativelyc'onnected to a transverse shaft 31 at the otheror deliveryend of the pressby means of a relama long belt drive 32, this bee assingover a pulley 33 on the armature shaft of the motor and a pulley 34 onthe transverse shaft 31. Y The shaft 31zis carried by the side members35 and, 36 of the base or frame and has secured thereto a a pinion 37dis posed edjaeent the side member and mesh:

ing witha gear 38-non rotatively secured to a short shaft 39 extendingthrough the said side frame 36. Outside the side member.- 36

the shaft 39 carries apinion 40in mesh with a large gear 41 keyed to atransverse shaft 42. This large gear meshes with a like large gear 43 inturn keyed to a transverse shaft 44 a'nd'also meshing with a smallergear 45 keyed to a short transverse shaft 46 which within'the basecarries a crank ar'm 47 having a crank pin 48. 7

' t i'san object of the invention to provide" a. simple andpositivemeans for reciprocat ing the bed of the press at a uniformvelocity during the greater portionjof its stroke and I to give aneasyand smooth reversal at the "end portions of, the reciprocation. Forthese purposes the mechanism comprises in combination with thereciprocating bed, gearing tordnving the bed second reciprocating memberdriven in timed the mechanism comprises a pair of segmental gears 49 and50 subtendlng angles of about I uring theuni- .torm veloclty portion ofits stroke and'a relation withflthe bed to make plurality offreciprocations while the bed makes a 'single reciprocation and means forconnect- 'ing the bed and memberwhen the lat er is making one of itsreversals whereby the bed is quickly reversed thereby. To these ends120an'd disposed between thelarge gears and 43 an'dthe side member 36.Preferably these segmental gears are removably attached to the largegears 41 and43 as by means of bolts 51. Thesesegmental gears area'dapted 'to alternately mesh with a" pinion 52 on a transversesh'aft'53 Which has a gear 54 secured thereto continually in mesh with acentrally disposed rack 55 on; the bottom of the bed 56. The bedreciprocates on four parallel ways 57 carried on cross members58connected to the side members of the base. 7 In o'rder to eliminatefriction four groups of rollers 59 are interposed betweenthe bed and theays 5? and these rollers are held in proper spaced relation lengthwise 1"ofthe bed by side bars 60. f 1

One of the objects of the invention is to;

positively reciprocateeach of these groups of rollers in timed relationwith the reciprocations of the bed to thereby reduce the power requiredto reciprocate the bed and make the whole mechanism more positive andaccurate. To this end the adjacent side members 60 of. one pair (ofrellers is con:

seats by easements at the ether pair by the cross-member 62. Thecrossmember 61 has Connected thereto a rack 68 slidable in the way 64and the cross-member 62 has a similar rack 65 connected thereto slidablein the way 66. These racks 68 and 65 mesh respectively with gears 67 and68 secured to the shaft 53, the said gears being half the diameter ofthe bed driving gear 54.

In this manner the groups of rollers will be reciprocated so that theperipheral velocities thereof will be identical with the velocity of thebed.

The bed is driven during the uniform velocity portions of itsreciprocations by the 9 gear 54. For the purpose of reversing the bed atthe ends of its stroke a reciprocating "member or frame 69 is slidablycarried with in the base of the press and at one end thereof has a slot7 O slidably receivingthe block 71 on the crank pin Preferably thediameter of the crank pin circle is the same as the pitch diameter ofthe gear and this is one-third'of the pitch diameter of the gears 41 and43. This memberor frame 69 is thus reciprocated by means of thecrank 47and associated parts and is adapted to be periodically connected withthe bed whenthe latter is making a reversal. The frame 69 is slidablysupported in bearingsq72 and 73. :20

Adjacent the ends of the upper edge of the frame 69arethe short rackblocks 74 and 7 5 which at the proper times are adapted to ,bealternately moved into mesh with the rack onthe bottom ofthe bed so thatthe two reciprocating parts are connected I 84 carried by the cam block85 secured. to

the frame ofthe press. The cam grooves 79 and 84 are formed andpositioned so that the rack blocks will be alternately moved into meshwith the bed rack 55 during the reversal of the bed. I

For the purpose of "describing the operation of the bed reciprocatingmechanism it will be noted in Fig. 5 that the bed is at the left handendof its stroke and theshort rack 74 is in mesh with the bed rack 55,the

bed being driven from the crank pin 48 The crank is moving in acounter-clockwise direction as viewed in Fig. G and when it reaches itslowermost position has brought the bed up to the same velocity as theperipheral velocity of gear 54 when driven by one of the segmental gears49 or 50 and when the crank reaches thisfposition the rack block 74begins to withdraw from engagement with the rack 55.. Atthe same timethe segmental gear 50 comes into mesh with the gear 52 thereby rotatingshaft 53 and through gear 54 driving the bed. WVhile the segmental gear50 is thus driving the bed the crank pin .48 will make one completerevolution and at the end of this revolution the rack block 7 5 will bemoved into mesh with the bed rack 55 so that the bed will be reversed atthe right hand end of its stroke as viewed in Fig. 5 while the crank ismoving through the righthand half of its rotation. When the crankreaches its uppermostposition as viewed in Fig. 5 the bed will havestarted back in its motion toward the left as viewed in Fig. 5 andtherack bar will begin to be moved out of engagement with the bed rackand the segmental gear 49 will just have come into mesh with thepinion52, thus driving the bed by means of the segmental gear 49 at a uniformvelocity. At

the point when the said segmental gear 49 is about to leave the'pinion52 the rack block 74 will be moved into engagement with the bed rack forreversing the bed at the other end of its stroke. The above describedcycle of operation is repeated during each complete reciprocation of thebed. 7

It will be noted in the above described mechanism for reciprocating thebed the'bed driving gear 54 and the rack blocks 74 and 75 cooperate withthe single rack 55 secured to the bed. Furthermordby makingthe segmentalge'ars of smaller diameter than the large intermeshing gears 41 and 43itis possible to have these latter gears of relatively great diametereven with a comparatively low bed.

Referrlng now to Fig. 7, the bed at the ends of its reciprocations iscushioned by pistons 86 secured to the bed and entering the cylinders.87 having flap valves 88, in a well known manner. The compressioneffect in these cylinders is so great that in starting upthe press themotor has not sufficientpower to reverse the bed. Means isthereforeprovided for relieving this compression. In the embodiment ofthe invention illustrated this is accomplished by connecting the closedends'of the cylinders. Thus as shown the pipes 89 connected with theclosed ends of the cylinders are in communication through a stop cook orvalve 90. At each side of this valve 90 is an adjustable relief valve91. In normal operation of the. press I the valve90 is closedjcuttingoff co 'nmunicat1on between the pipes 89the compression in the cylindersbeing slightly relieved through the relief valves 91. In starting up thepress however the valve 90 is turned so as to place the pipes 89 incommunication whereupon air compressed in one pair of cylinders will beconveyed through the pipes 89 and exhausted through the other pair. Inthis .manner the compression is so relieved that the press may bestarted up.

tion in part of this case:

have been di- 36,943 June '13, 1925 Machine elementv 42,086 July 7, 1925Printing press 42,087 July 7, 1925 Printing press 184,116 April15, 1927Sheet feeders 184,122 April 15, 1927 Sheet feeding mechanism Thefollowing application is a continua- Title.

Serial No. Filing date. 34,687 June 3, 1925 Extension sheet delivery Thefollowing application is directed to pile elevating mechanism for thispress and refers to this case:

Title.

Serial No. Filing date. 490,289 August 6, 1921 Pile elevating mechanismThe following applications respectively show mechanisms suitable for usewith this 490,291 August 6, 1921 Printing press (Patented Oct. 2, 1923,No. 1,469,515) Having described the invention what is claimed as new anddesired to besecured by Letters Patent is: I

1. A printing press bed movement including in combination, areciprocating bed hav-' ing a centrally disposed longitudinal rack, a

pinion continually meshing with said rack,

means rotating said pinion at a constant speed in opposite directions atregular intervals to drive the bed at a uniform velocity, and meansperiodically engaging said rack during the end portions of the stroke ofthe bed to reverse the same.

2. A printing press bed movement includ ing in combination, areciprocating bed hav- 1 ing a centrally disposed longitudinal rack, a

blocks into engagement with said rack durpinion continually meshing withsaid rack, means rotating said pinion at a constant speed in oppositedirections at regular intervals to drive the bed at a uniform velocity,reciprocating rack blocks at opposite ends of said bed having a shorterstroke thanthe bed, and means to alternately move said ing the endportions of the bed stroke to reverse the bed.

3. A printing press bed movement including in combination, areciprocating bed having a centrally disposed longitudinal rack, areciprocating member having a shorter stroke than the bed, a pinioncontinually in mesh with said rack, means to rotate said during theconstant velocity part of its stroke, I I

and means to connect said bed and member I during the end portions ofthe stroke of the.

bed to reverse the same including rackblocks adapted to meshwith saidrack, and means to actuate said blocksinto and out of engagement'withsaid rack.

4. A printing press'bed movement includj 111g in combination, areciprocating bed hav-f,

ing a centrally disposed longitudinal rack,

a pinion continually in mesh with saidfrack, 1 a second p nion coaxialwith said first plnion, a pair of large meshmg gears, means to drlve oneof said gears at a constant speed, a

smaller diameter segmental gear coaxial with each large gear, saidsegmental gears adap t' ed to alternately mesh with said second.

pinion to drive the same in opposite ,direc tions at regularintervals',and means 00- operating with said rack toreverse the bed.

5.v A printing press bed movement includ-f mg in combination, areciprocating bedhavmg a centrally disposed longitudinal rack, .a pinioncontinually n mesh with sald rack, a second pinion coaxial wlth saidfirst pinion,

pair of'large meshing gears, means to drive one of sa d gears at aconstantspeed, a smaller diameter segmental gear removably secured toeach large gear, said segmental sit) gears adapted to alternately meshwith said second pinion to drive the same in opposite directions atregular intervals, and means cooperating with said rack to reverse thebed.

'6. In a printing press, in combination, a

reciprocable' on said frame, and having a cent-rally disposedlongitudinal rack, a transbase frame having two side members, a bed sideof one ofsaid members, a pair of large meshing gears'on the same side ofsaid mem ber, means to" drive said gears at a constant I speed, asegmental gearsecured to each large gear between thelarge gear andmember and adapted to alternately mesh with and drive the second pinioninopposite directions at regular intervals, and means cooperating withsaid rackto reverse the bed at the ends;

of its stroke,

7. In a printing press, base, a bed reciprocable on'said base, rollerssupporting the bed on the base, a rack on the bed, a shaft, a gear onthe shaft meshing with the rack to reciprocate the bed, a second first"ear a reci rocable rack meshin with 2: 7 P g in combination, a f

liU

gear on the shaft half the diameter'of the I I last mentioned rack androllers to reciprocate I the latter with the rack.

In testimony whereof I hereunto affix my signature.

WILLIAM M. KELLY.

iii)"

